1131311158 has 8 divisors (see below), whose sum is σ = 1698348960. Its totient is φ = 565194840.

The previous prime is 1131311099. The next prime is 1131311161. The reversal of 1131311158 is 8511131311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227293 + ... + 232216.

It is an arithmetic number, because the mean of its divisors is an integer number (212293620).

Almost surely, 2^1131311158 is an apocalyptic number.

1131311158 is a deficient number, since it is larger than the sum of its proper divisors (567037802).

1131311158 is a wasteful number, since it uses less digits than its factorization.

1131311158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460742.

The product of its digits is 360, while the sum is 25.

The square root of 1131311158 is about 33634.9692730646. The cubic root of 1131311158 is about 1041.9831360256.

Adding to 1131311158 its reverse (8511131311), we get a palindrome (9642442469).

The spelling of 1131311158 in words is "one billion, one hundred thirty-one million, three hundred eleven thousand, one hundred fifty-eight".